Develop Bugs

Cannot Sync - USB Device not recognized

i am getting an error message saying "USB device not recognized. One of the USB devices connected to this CPU has malfunctioned and windows cannot recognize it"
when i plug the phone in to the usb plug the charge light comes on for a sec, then i get that message and then the light goes off. I feel as thought i may have damaged the mini usb port (the cable is a snugger fit now) on my phone due to a drop, but it still charges thru the wall and has worked since the drop on the cpu, but now i am getting that message.
Help!

Are you having trouble making phone calls? I had this issue one time in my hermes, and its a brick now!

No, phone functionality seems fine...data and calls.
btw, the light also comes back on after the phone goes to standby.

Change the USB cable and see if it fixes it! If not, it might that the pins are getting a bit worn out in the phone.

don't have another cable to test right now, but the same cable works for another phone. not sure if that proves anything, but it's all i know for now

Dillsnik said:
don't have another cable to test right now, but the same cable works for another phone. not sure if that proves anything, but it's all i know for now
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Have you reboot your phone and your pC?

mine doing the same thing. thats why I looked at the tread hopeing someone would have an answer. I guess not.
MS6 software, windows vista ultimate.

zocster said:
Have you reboot your phone and your pC?
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Yes. From past experience with various charging issues with different Hermes before (car chargers not able to charge unless powered off, then rebooting plugged in to keep the charge going), finicky usb cables, etc. ), I know that the hermes can be funny with charging/syncing to begin with. But since i had dropped it and it landed right on the port and bent it a tad, it really feels like something got damaged a bit. Not enough to eliminate the charging from working, but enough to give me problems....like this.
Example, i have never had this problem in the wall before, just mainly in the car, and even then it's usually when the battery is very low: When i plugged the phone into the wall last night, it wouldn't charge right away. once it went to sleep mode it started charging, but i i power it up the charge light goes off.

try
HKCU\ControlPanel\Comm\Cnct = `57600 Default (string)
to
HKCU\ControlPanel\Comm\Cnct = `USB (string)
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it work for me

thank you for the tip, but no luck still

in the "USB to PC" under your system settings, the box to "enable advanced network functionality" sould be checked by default, uncheck that box and you should be able to connect and sync through usb with no problem

I've done that...it feels like a hardware problem, but since the port works kind of it's hard to call it a hardware issue. techs i've talked to have said if it works at all then it must be software related

Usb no connect?

Since i am on the energy Rom Energy.RHODIUM.21914.Sense2.1.Aug.18, my USB does charge but does not sync with the pc. i can not access the SD neither the phone itself.
how do i fix this?

have you got the newest activesync/wm device centre installed on your pc? and do you still get the screen asking whether to use activesync, usb storage or internet sharing?

feygor said:
have you got the newest activesync/wm device centre installed on your pc? and do you still get the screen asking whether to use activesync, usb storage or internet sharing?
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I 'm having the same problem as stated above. To anwser your question no, nothing pops up. Please help. I don't think it's a rom problem.

It might be a hardware issue. Try a different USB cable. Also try looking at the USB connector inside the phone with a magnifying glass, to see if any pins look out of place. Different pins are used for the charging as opposed to data (syncing).

Disable your firewall
90% chance this will solve your connectivity issues.
I'm using ESET Smart Security suite, and it's firewall is known to interfere with Windows Mobile phones...
cheers

steviewevie said:
It might be a hardware issue. Try a different USB cable. Also try looking at the USB connector inside the phone with a magnifying glass, to see if any pins look out of place. Different pins are used for the charging as opposed to data (syncing).
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This. Happened to me.
At one time it was thinking TV-out was connected all the time, ARGH!
I fixed it but still, a lot of times it won't sync but will show up in explorer.
Never had firewall issues, though?

kosmarnik said:
This. Happened to me.
At one time it was thinking TV-out was connected all the time, ARGH!
I fixed it but still, a lot of times it won't sync but will show up in explorer.
Never had firewall issues, though?
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Click to collapse
How can you tell if it thinks it's in TV out mode? How do you fix.
I'm having the same issue, within the last few weeks USB for activesync or mass storage doesn't seem to work any more. Charging is fine though, as is the headset for radio.

it happens when you don't have active sync installed. if you have active sync installed try using diff. usb port on your pc.

Go into Start > Settings > Connections > USBtoPC.
Uncheck the box that says "Enable faster data synchronization."
Press Done at the bottom and try again.

Both I and a friend had this happen to us at relatively the same time. I'd read another owner that had RMA'd their phone for this issue and was told it was because of their car charger. My friend and I had taken a trip and had both used my charger, which involved turning the car on while plugged in. We were both under warranty, so we got our phones replaced.
To my knowledge, there has been hardware damage and the data part of the connection will not work again.
Another symptom was that the battery was discharging rapidly. If you notice this, you're probably looking at needing a replacement.

arimp said:
How can you tell if it thinks it's in TV out mode?
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The phone will show a TV-out screen asking you to pick PAL or NTSC video output mode.

ugoff said:
Both I and a friend had this happen to us at relatively the same time. I'd read another owner that had RMA'd their phone for this issue and was told it was because of their car charger. My friend and I had taken a trip and had both used my charger, which involved turning the car on while plugged in. We were both under warranty, so we got our phones replaced.
To my knowledge, there has been hardware damage and the data part of the connection will not work again.
Another symptom was that the battery was discharging rapidly. If you notice this, you're probably looking at needing a replacement.
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Click to collapse
What happen here was that the pins got slowly bent out of shape and could not maintain contact and were some times making a short.
I fixed it with some sharp end tweezers and a needle.

[Q] Computers No longer recognize device no more recovery

So after several weeks trying to figure out what is wrong with my device I came to the conclusion that the USB port on my GNex went bad
here's a few reasons why:
-GNex No longer chargers when plugged in the wall outlet tried several OEM and non OEM USB cables
(but will somewhat charge if the phone is turned off but very slowly and has an error) It shows the battery icon then
it will flash twice the battery charging icon then back to the battery icon with the bolt in the middle and will do that through out the night.
Had a custom rom on there tried changing roms but my computer no longer recognized it and so i've installed removed various drivers
and tried different PC ports and nothing would let it recognize so I manually download a rom on the phone but it wouldn't install.
So I was finally able to odin back to factory stock but that still didn't do anything not only I can no longer go into recovery because it seems to
not have one so I'm stuck and it's getting on my nerves because the only way I can charge it while it's on is plugged into the computer.
I'm my money is that USB port on the phone is malfunctioning so I'm trying to relock the bootloader but can't find a through the terminal, because ADB does not work. Technically the phone still has manufacture warranty. So any help would be appreciated. Thanks guys

Does your computer recognize it in fast boot?
Sent from my Galaxy Nexus using xda app-developers app

I had the exact same issue with an old T989 (T-Mo SGSII). Same symptoms and everything. What got me through the insurance claim was that I told them that the phone was doing an OTA but somehow it failed and it was stuck at the ODIN screen. What really happened was the USB port gave way while restoring to stock which caused the soft brick, but after that the USB port was completely nonfunctional. Try re-positioning the USB cable, the port might be making bad contact with the pins. Other than that, I would just ship it as is since they hardly check that the phones are rooted or in your case, an unlocked bootloader.

No it doesn't recognize it in fastboot or anything it says unknown device. As far as sending it back in I've been on the samsung website trying to request a service repair, but I've also purchased the phone on CL. But I didn't have a problem with it for several weeks so I know it really wasn't a defective unit. Yeah, I thought about reposition the USB cable to no avail.
I didn't think about using that... how did you manage to get an RMA or something to get it replaced

So you can use the device itself fine? Cab you go into play store? Download booot unlocker . it locks/unlocks the bootloader from the phone itself
Sent from my Nexus Prime

Questions go in Q&A
Thread moved
Thanks
FNM

My apologies if it was in the wrong thread. Yes I'm able to use the phone fine and everything it's just the charging and recognition that's causing problems.
Another question what do I need to be able to open a repair request from samsung or how do I go about it. went to the website but all it does is take me to FAQs?

Well unfortunately boot unlocker won't work because I don't have root and I can't root my phone through ADB or anything like that because like before PCs won't recognize phone at all unless there is a method I can use through the terminal editor

I don't want to hi-jack your thread, but I am also having a similar issue.
I am running CM 10.0.0 but the cell phone will charge, but will NOT connect to the computer. I have tried two different cables and on 3 different USB ports on two different computers. I have the Samsung drivers downloaded and installed. I did not have this issue before the unlock/flash of CM. Is this is a known issue? Is there anyway around it?

I'm starting to think its a USB port issue

If it hasn't been said before, this is a very common problem, it even happens with a few Samsung phones. It's not software related, all hardware, the micro USB port is lousy.
Unless you want to work with Samsung, who, based on my experience, will probably want to charge you "because you broke it", there's the incredibly hard-to-find Pogo Dock or the inductive charging mod, which is actually kinda neat I may do that, I already have all the touchstone stuff...
There's also DIY replacement of the USB daughter board or whatever the exact term is.
In any case, Samsung *might* help you, for a decent fee and 2 weeks' (or more) time.

Yes, try to analyze USB port pins for damage, dirt, bent, anything that can cause a lousy connection (or none whatsoever)
Sent from my i9250

Yeah, I mean I would have to figure something out because I can't transfer files and the only to do it is to upload them to the cloud which is not optimal and real pain.

well out of nowhere USB starting working and charging now normally. So that's cool I'm glad now just to wait till ubuntu comes out.

[Q] 32gb Flo with USB OTG and data issues

Hey folks, I have a N7 with some issues. I'm bashing my head against the wall on this one. I bought a 2nd gen N7 with a broken screen from some crook on eBay. He neglected to discuss it's other problems, however this is what I have. I replaced the screen, but even before doing so I found that a USB OTG mouse was not recognized (it works on my 1st gen), then I tried my little BT keyboard, BT wouldn't pair... Plug the tab into a PC and the PC completely ignores it. No device in device manager, I can even go to the port the tab is on is device manager and it shows nothing, not even current draw. The tablet does however charge on the PC, and it for some reason thinks that it is on AC charging, not USB. I have tried this on several computers with almost identical results. On a PC with USB 3 ports though, device manager sees it, just says that the device is unrecognized and may have a hardware problem.
So, I managed to get it to connect MTP one time by slightly twisting the USB cable. I then determine it must have a bad USB port, so I ordered some SMD USB sockets when I got other parts for a different project. I replaced the USB port tonight, and nothing changed, it is exactly the same. No data, always thinks it's on AC. On a whim I tried USB while in the bootloader, and it installs the fastboot drivers just fine and I am able to send fastboot commands.
After finding this, I figure it has to be something software or firmware related, so I flash it via fastboot back to bone stock. Reboot system and still no data connection, still thinks it's always on AC. I'm about at my wits end with it. I know there are other ways to move data to the tablet, but only having access to ADB via wifi is lameo and I happen to use USB host.OTG a lot.
Does anyone know what I am missing? I'm thinking it has to be something in the firmware at a level deeper than most the roms and images go. The PO is had it unlocked and cleanrom flashed. I have since tried AOKP, stock 4.4.4, now PA.
On a side note, if there is no fixing this SOB, do any of you know which of the flo roms have native wifi ADB? At least that will help...
Thanks,
Jason

No one has any ideas? No one else has had this issue? What it seems to me is that it is stuck in "USB fast charge mode" that's the only reason I can think that it would think it was on AC still even when on USB. I have tried three different kernels though now and enabled USB fast charge then disabled it, but it doesn't help.
Is it possible for someone to have put it in fast charge mode and made it stick regardless of kernel changes?
Just looking for ideas. Thanks folks!
Later,
Jason

I have exactly the same issue as yours! I couldn't connect my N7 via USB to PC. Gave me USB device not recognised error. I even fastory reset it. However, one time I did twist the USB cable and my device was recognised and it seemed to work fine during that day. I also managed to flash Android L developer's preview on top of that. The following day I started getting the same issue and haven't been able to resolve ever since. Even in fastboot, my device doesn't get recognised. It's the most frustrating thing ever!

Yeah, it definitely sucks. I was convinced it was the USB socket since twisting brought it alive that one time. However, I replaced my connector and it is the same. I then took it apart again and inspected all the traces and solder joints near the USB connector. I was still certain that the twisting meant it was a physical problem. It wasn't until much later that I found that fastboot worked.
I have done a ton of research trying to find an answer, but most everyone just pawns it off as a driver problem. I have tried every fix those people have offered, but it is never seen by the PC on USB 2, and only shows up as "device not recognized" on USB3. I have tried several different computers, but today I'm going to try an old XP machine. Several people seem convinced these issues are due to Win7. I'll let you know if I find anything.
Later,
Jason

jacampb2 said:
Yeah, it definitely sucks. I was convinced it was the USB socket since twisting brought it alive that one time. However, I replaced my connector and it is the same. I then took it apart again and inspected all the traces and solder joints near the USB connector. I was still certain that the twisting meant it was a physical problem. It wasn't until much later that I found that fastboot worked.
I have done a ton of research trying to find an answer, but most everyone just pawns it off as a driver problem. I have tried every fix those people have offered, but it is never seen by the PC on USB 2, and only shows up as "device not recognized" on USB3. I have tried several different computers, but today I'm going to try an old XP machine. Several people seem convinced these issues are due to Win7. I'll let you know if I find anything.
Later,
Jason
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Try flashing 4.4.2 factory image. Maybe it starts working. For me, issues started 4.4.4+. currently I am stuck on Anroid L preview

Quick update, I asked Scott at Asus if he could give us any ideas, he said base don everything I told him that I had tried that it seems likely that it is a hardware problem with the USB board. I'm still not convinced, but the USB board is going to be my last resort.
Other than that, I tried the tab on a win XP computer and XP sees it as "unrecognized device" says that the USB needs unplugged/replugged and if that doesn't work to replace the device... I would think that the data pins are shorted or something, but mine works in fastboot, that is what has me stumped!
I'll try flashing 4.4.2.
Thanks,
Jason

Well, I just flashed back to 4.3.0 which looks to be the original software for this device. It did not behave any differently. I guess I am going to have to look into a new USB board. The things are expensive though, hopefully I can catch a decent used one for a good price. I'll let you all know if I order one and if it solves it.
Later,
Jason

New board is expensive. *sigh*

Yes they are, and I wouldn't trust ebay as far as I could throw it. I would hate to buy a used one and find out it has the same issue. I have another email into Scott asking if it is possible to buy parts direct from ASUS, and if so, what the board might cost. I'll keep you posted.
Later,
Jason

I heard back from Scott at Asus. They do not sell any parts. He suggested eBay... I guess I will start a saved search and see if I can catch one for a reasonable price. I can't see dropping $80 on a USB board. I guess if it doesn't fix it I could resell it... Still is retarded. This will make what this tablet has cost me much more than a brand new one Damn the crooked eBay sellers!!!
Later,
Jason

jacampb2 said:
I heard back from Scott at Asus. They do not sell any parts. He suggested eBay... I guess I will start a saved search and see if I can catch one for a reasonable price. I can't see dropping $80 on a USB board. I guess if it doesn't fix it I could resell it... Still is retarded. This will make what this tablet has cost me much more than a brand new one Damn the crooked eBay sellers!!!
Later,
Jason
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Oh that's awful! I can't believe they don't sell replacement parts! I guess I have to live with a broken N7. I just hope Google pushes official L release OTA to devices running L preview.

I had a similar issue once. Turned out that MTP mode wasn't selected. Storage >Menu button > MTP should be selected.

S3 (T-Mobile) has no OS installed and PC will not recognize it.

I'll try to keep this short as possible but will answer questions as needed if I get any replies.
This happened a while back, after I had gotten a brand new Note 3, so this isn't my primary device anymore. I was messing around with it after I'd gotten my new phone and somehow during the process of wiping/installing a ROM I royally screwed up and in the end, my S3 (T999) all of a sudden has no OS on it, and as an added bonus, it cannot be detected by any PC. I don't recall exactly how this happened, but in the several devices I've owned, and the several hundred roms I've probably flashed, no mistake I've ever made has ever looked like this.
I guess potentially good news is that it does turn on, and I can get into both stock recovery and download mode, but when I connect it to the PC, no PC knows wtf it is, and gives a "USB Device Not Recognized" error every time. PC doesn't recognize it so it obviously doesn't know what drivers to use, etc.
Can I repair this myself? I figured since it boots into recovery/download I may have a chance but it looks quite bleak. I have tried absolutely everything I can think of, so I will greatly appreciate anything that maybe points me in the right direction of what to do, unless it's a total loss.

Does the phone charge when connected to a power source? You tried computers with different operating systems? Tried different USB cables and USB ports on the computers?
It could be a damaged USB port.

audit13 said:
Does the phone charge when connected to a power source? You tried computers with different operating systems? Tried different USB cables and USB ports on the computers?
It could be a damaged USB port.
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It happened a while ago so I can't recall exactly how many PC's it's been attempted on, but I'm pretty sure I've tried this on at least two or three other PC's. It is something to try again however, and I will double check. That, and different USB cables. It never occurred to me this could just be a bad USB port/cable. My next step was going to be to try it on a Linux VM as I don't have a computer right now running Linux.
Also, I charged it for a few minutes using a battery pack and I was surprised to see the battery LED light up red.. if I remember correctly that means it's charging.

Yes, as long as the led stays on and is red, it is charging.
Report after you've had a chance to conduct more tests.